3H49

PAY RANGE: EP19

 

FORENSIC SCIENTIST 2

(Biology)

(Chemistry)

(Pattern Evidence)

 

GENERAL DEFINITION

 

††††††††††† †This is forensic science work at the qualified examiner level in the preservation, examination, handling, and comparative analysis of items of evidence collected in criminal investigations.† Positions in this class are allocated to one of three specialties: Biology, Chemistry or Pattern Evidence.† Positions allocated to the Pattern Evidence specialty are assigned to one of the following disciplines: Documents, Firearms/Toolmarks, or Latent Prints.† An employee in this class is assigned progressively more difficult work tasks and is expected to work independently on casework and assumes greater responsibility as experience is gained.

††††††††††† †Work in each specialty includes examining evidence associated with crimes for presentation of laboratory findings in written reports and through expert testimony in criminal trials. As experience is gained, assignments increase in scope and complexity.† All work is performed in accordance with national and international quality assurance standards in the accredited Forensic Science Bureau of the Philadelphia Police Department. Work is performed under the supervision of a higher-level forensic scientist or technical superior.

 

ALLOCATING FACTORS: (The following conditions must be met for a position to be allocated to this class.)

 

         Employees in this class must perform biology, chemistry or pattern evidence work at the qualified examiner level.

         Positions must be located in the Forensic Science Bureau of the Philadelphia Police Department.

 

TYPICAL EXAMPLES OF WORK (ILLUSTRATIVE ONLY)

 

ALL SPECIALTIES

 

         Performs the duties of the specialty/assignment at the qualified examiner level.

         Prepares reagents used in the area of specialty/assignment.

         Logs in samples in compliance with departmental and national forensic accreditation procedures.

         Stores samples according to proper established protocols.

         Maintains data records; prepares reports.

         Communicates findings and conclusions with investigators and attorneys.

         Maintains compliance with all quality assurances standards for forensic accreditation.

         Determines the type and order of forensic examination to perform.

         Collaborates with other experts in the FSB to ensure that all integrated examinations across disciplines are performed when required.

         Prepares technical reports on findings and projects; studies pamphlets, journals, and books for use in devising methods an tests

         Follows evidence control procedures to maintain chain-of-evidence integrity; insures evidence is locked securely in designated locker or space before and after analysis.

         Operates computer consoles to analyze results of tests or to perform mathematical calculations involved in the analyses of evidence.

         Checks instrumentation for validity and reliability against standards and recalibrates.

         Provides expert testimony on examinations in criminal trials.

         Participates in research projects by performing routine tests.

         Provides presentations in the assigned discipline.

         Participates †in regular training and competency testing.

         Performs related work as required.

 

BIOLOGY SPECIALTY

 

††††† Examines physical evidence for trace materials to be tested with presumptive and confirmatory procedures, including but not limited to, those for the presence of blood, semen, saliva, hair, and other biological material.

††††† Extracts DNA from various biological samples (i.e. blood, semen, saliva, etc.) using DNA extraction techniques, such as, Chelex and organic methods; amplifies extracted DNA for particular genetic markers using PCR technology.

Establishes genetic profiles for biological samples collected from crime scenes and reference samples collected from suspects/victims through the use of standard molecular biology techniques, equipment and software, such as capillary electrophoresis analyzers and GeneMapper; compares genetic profiles established from scene samples to genetic profiles established from reference samples.

Performs basic statistical calculations to determine frequencies of matching profiles and advanced statistical calculations to evaluate biological relationships associated with kinship.

Performs related work as required.

 

CHEMISTRY SPECIALTY

 

††††††††††† Collects and analyzes samples of liquid, solid, and gaseous materials, substances and compounds for qualitative and/or quantitative results.

††††††††††† Analyzes macroscopic and microscopic suspected substances for presence of illegal elements, by use of traditional and instrumental chemistry techniques; identifies controlled substances, precursors, by-products and other substances used for drug dilution; examines and identifies suspected drug paraphernalia; analyzes foodstuffs for the presence of foreign materials such as drugs and poisons, and identifies possible poisons; analyzes urine for drug content and quantifies concentrations; collects evidence samples and prepares facilitating tasks for higher-level chemists at clandestine laboratory scenes.†

††††††††††† Analyzes samples with wet chemistry methods or standard laboratory equipment and/or advanced instrumentation, such as, atomic absorption/emission spectrophotometers, gas/liquid chromatographs, UV-visible, infra-red spectrophotometers, mass spectrometers, scanning electron microscopes, compound mircroscopes and/or any related equipment.

Performs related work as required.

 

PATTERN EVIDENCE SPECIALTY

 

Document Assignment

 

††††††††††† Examines, classifies and/or compares documents, papers, checks, stickers, stamps, impressions, handwriting and other related evidence; utilizes advanced techniques to restore or visualize identifying marks and obliterated or altered evidence.

Performs related work as required.

 

Firearms/Toolmarks Assignment

 

††††††††††† Examines, classifies and/or compares firearms, ammunition, tools, toolmarks, and other ballistics evidence; checks files to ascertain if recovered weapons have a previous record of being stolen or wanted as evidence.

Utilizes advanced techniques to restore identifying marks or serial numbers, which may have been obliterated; performs comparative analysis on various comparison microscopes and documents findings through photomicrography and written notes.

Test fires weapons and performs safety checks.

Performs related work as required.

 

Latent Print Assignment††††

††††††††††† Examines and classifies incoming fingerprint impression evidence; enters work received into a computerized tracking program.

††††††††††† Evaluates and enters suitable latent prints into an Automated Fingerprint Identification System (AFIS) for searching; uses AFIS results to pull files for manual comparison

††††††††††† Makes decisions of individualization based on ACE-V scientific methodology.

Performs related work as required.

††††† †††††

REQUIRED KNOWLEDGE, SKILLS AND ABILITIES

 

KNOWLEDGE OF:

 

ALL SPECIALTIES

 

             basic laboratory techniques and the techniques and equipment used in a forensic laboratory related to the specialty/assignment

             specific laboratory, and analytical, and interpretational protocols related to the procedures utilized in the PPD/FSB in the area of assignment.

             forensic quality assurance practices

             national standards and guidelines related to assigned area

             city, state, national, international, and/or departmental standards, laws, directives, and guidelines that apply to assignment area.

             safe and proper handling of hazardous items, such as firearms, biological fluids, acids/bases, flammable liquids, that are encountered within the assignment area

             safety practices and procedures as they apply to a forensic laboratory related to the assignment

             policies and procedures related to chain of custody

             policies and procedures related to expert testimony

             research methods and techniques

             basic computer operations

 

BIOLOGY SPECIALTY

 

             the principles of biology, molecular biology, genetics, biochemistry, forensic science, and statistics

             basic biology and molecular biology techniques and equipment used in a forensic biology laboratory

             National Standards for Forensic DNA Analysis

 

CHEMISTRY SPECIALTY

 

                     the principles, methods, and practices of chemistry, in particular analytical chemistry

                     mathematics and statistics as they relate to chemistry

†††††††††††

PATTERN EVIDENCE SPECIALTY

 

         ††††† the principles of comparative analyses used in a forensic science laboratory for † pattern evidence, specific to the area of assignment

         ††††† mathematics and statistics as they relate to forensic pattern evidence

         ††††† reference standards in relation to the area of assignment

 

SKILL IN:

 

ALL SPECIALTIES:

 

             identifying characteristics inherent in forensic samples

             independently performing forensic analysis, according to established protocols as a qualified examiner in the area of specialty/assignment

             utilizing current laboratory equipment and techniques in the assigned discipline.

             maintaining forensic quality assurance standards

             safe and proper handling of laboratory equipment, reagents, and evidence to include items of a potentially hazardous nature

             communicating in both written and verbal form

             evaluating statistical data

 

ABILITY TO:

 

ALL SPECIALTIES:

 

             independently analyze forensic evidence in the area of specialization or assignment at the qualified examiner level

             perform technical reviews of analysis and reports

             prioritize work and meet deadlines

             enter and evaluate statistical data

             continually develop and advance expertise in the principles, practices, materials and equipment used in the assigned discipline

             use and maintain sophisticated equipment in the assignment area

             perform the tests, examinations and protocols required in the area of assignment

             express ideas and facts clearly and effectively both orally and in writing

             distinguish colors and visually analyze analytical results, which may include color changes, pattern recognition, graphs, charts, tables, and other forms of electronic data

             perform standard tests and make accurate analyses, using quality control techniques

             establish and maintain effective working relationships with associates and public

             understand and follow oral and written instructions

             maintain accurate records and prepare reports

             testify effectively in court

            operate a computer console to analyze results of tests or to perform calculations involved in the analysis of evidence

 

MINIMUM ACCEPTABLE TRAINING AND EXPERIENCE† (The following statement represents the minimum training and experience standards which will be used to admit or reject applicants for tests.† Applications submitted by candidates for this class will be reviewed based on training and experience requirements as approved on 5/13.)

 

EDUCATION:

 

††††††††††† Completion of a bachelor's degree program at an accredited college or university, with major course work in:

 

SPECIALTY:††††††††††††††††††††††† DEGREES†††††††††††††††

 

BIOLOGY:†††††††††††††††† Any of the following degrees, which include at least 3 credits in ††††††††††††††††††††††††††††† ††††††††††† EACH of the following courses: molecular biology, genetics and †††††††††††††††††††††††††††† ††††††††††† biochemistry:

 

1.    Chemistry

2.    Biological Science

3.    Forensic Science

4.    Biomedical Engineering

5.    RELATED SCIENCE DEGREE

 

AND

 

Candidates must also have, prior to appointment, successfully completed 3 coursework credits or have documented training/experience in population genetics or statistics, in accordance with FBI Quality Assurance Standards.

 

CHEMISTRY:

1.    Chemistry

 

OR

 

††††† Any of the following degrees with 24 semester hours in chemistry or ††††† biochemistry:

 

1.    Biological Science

2.    Forensic Science

3.    Physical or Natural Science

4.    Applied Science

5.    Chemical Engineering

††††††††††††††††††††††††††††††

PATTERN

EVIDENCE:

 

1.    Chemistry

2.    Biological Science

3.    Forensic Science

4.    Physical or Natural Science

5.    Applied Science

6.    Engineering

OR

1.    SCIENCE OR NON-SCIENCE DEGREE with coursework in statistics or applied research methods

 

AND

 

EXPERIENCE:

 

ALL SPECIALTIES

 

††††††††††† Two years of training level forensic science work as a Forensic Scientist 1 or equivalent forensic science work learning the methods and techniques involved in the preservation, examination, handling, and comparative analysis of items of evidence collected in criminal investigations in the assigned specialty/discipline.

NOTE: Candidates must provide documentation, prior to appointment, to support their qualification as a qualified examiner. See below for details.

 

QUALIFIED FORENSIC EXAMINER DOCUMENTATION- Must be provided to the Police Department at the time of interview.

 

††††††††††† Proof of successful completion of a training program within an accredited forensic science organization, which resulted in qualification as an expert (forensic examiner) in the area of specialty and assignment.† Qualification must have included independent forensic casework, routine proficiency testing, and testimony as an expert in the area of specialty/discipline. External candidates must provide documentation to support their qualification as an expert.† Documentation should include:

 

1.            A certificate or letter from an accredited forensic laboratory that details the area and date of qualification.

2.            Proof of the laboratoryís accreditation from either ASCLD-LAB, FQS, or another ISO 17025 forensic accrediting body.

3.            Proof of successful completion of routine proficiency test may include copies of proficiency test results, a summary document from the laboratoryís quality assurance program, or other documentation that details scope and completion of proficiency testing.

4.            Proof of testimony experience may include a copy of a court transcript from one or more trials, or a letter from a court official detailing the expertís experience testifying in court as an expert in a specific discipline.

 

NOTE: Employees must maintain status as a qualified Forensic Examiner during tenure of employment as a Forensic Scientist 2.

 

NOTE: Selective Factor Certification may be utilized, as needed, to fill specific positions. In accordance with Civil Service Regulation 11.032 - Selective Factor Certification - the appointing authority may request certification of eligible candidates with one or more of the required degrees and/or specific experience to fill specific positions in this class. Certification to fill such positions will be made from the two highest-ranking eligible candidates on the eligible list who possess the specified degree and/or experience.

†††††††††††††††††††††††

PHYSICAL AND MEDICAL REQUIREMENTS

 

††††††††††† Ability to physically perform the duties and to work in the environmental conditions required of a position in this class.

††††††††††† Ability to visually distinguish test results, which may include color changes, pattern recognition, and interpretation of electronic data (tables, graphs and charts).

 

LICENSES, REGISTRATIONS AND/OR CERTIFICATES

 

††††††††††† Possession of a valid proper class motor vehicle operator's license as issued by the Commonwealth of Pennsylvania prior to appointment and during tenure of employment as a Forensic Scientist 2 if required by work assignment.

 

Class Established 11/85

Latest Spec. Revisions:

††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† CSC - 4/13

†††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† AdBoard - 5/13

 

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